CN210766548U - Fiber reinforced composite material guardrail - Google Patents

Abstract

The application discloses fibre reinforced composite guardrail belongs to safety device technical field such as the road extension or lie in the continuity guardrail between the lane that is used for making the vehicle that traveles slow down reverse direction or stop traveling on road railway or bridge auxiliary engineering. The connecting piece is characterized by comprising a plurality of longitudinal upright posts which are arranged at intervals, a plurality of protective beams which are arranged at intervals longitudinally and a plurality of connecting pieces which are arranged on the upright posts at intervals longitudinally, wherein one end of each connecting piece is buckled on the side wall of each upright post, and the other end of each connecting piece penetrates through the upright posts and is fixedly connected with the upright posts to form a semi-movable connecting structure of the connecting pieces and the upright posts; each protective beam transversely extends to be arranged in a gap between the connecting piece and the upright post. The safety protection device has the advantages of being convenient to install, stable in connection and high in safety performance, shock absorption and buffering effects of the protection fence are improved, the service life of the protection fence is prolonged, and comprehensive cost is reduced.

Description

Fiber reinforced composite material guardrail

Technical Field

The application relates to a fiber reinforced composite guardrail, belonging to the technical field of safety devices such as continuous guardrails which extend along a road or are positioned between lanes and are used for enabling a running vehicle to decelerate and reverse or stop running on a road railway or a bridge auxiliary project.

Background

The highway guardrail is an energy-absorbing structure, and can absorb collision energy through deformation while preventing vehicles from crossing a highway, so that the direction of the vehicles is changed, and the accident loss is reduced to the maximum extent. The conventional road guard rail is generally a connection structure in which corrugated steel guard rail plates are spliced with each other and supported by main posts, and the above structure has the following disadvantages:

1. the steel is used as a hard material, the breaking elongation of the steel is only about 3%, the deformation degree is small, and the energy absorption effect is poor;

2. when a car accident or strong impact occurs, the steel guardrail plate is very easy to insert into a car body, so that great injury is caused to personnel on the car, particularly, the existing steel guardrail plate is fixedly connected with the upright post, when the existing steel guardrail plate is impacted, the whole protective guardrail is deformed and damaged in a large area, the anti-collision performance is poor, the steel guardrail plate is easy to rush out of the road surface, so that potential safety hazards are caused to drivers, when the upright post is impacted and laid down, the protective guardrail can topple over along with the upright post, and the car with higher gravity center is easy to climb over the guardrail to cause great injury; meanwhile, after the existing protective railing is impacted by external force, the buffer function cannot be realized only by the blocking function of the protective railing, and the external impact force cannot be effectively removed;

3. the shielding area of the steel guardrail plate is large, and when the steel guardrail plate is arranged on two sides of a road, a strong oppression feeling is caused to pedestrians on the road due to the fact that the guardrails are seen for a long time, and certain influence is caused to driving;

4. the steel guardrail plate has high manufacturing energy consumption, particularly in the corrosion-resistant galvanizing process, the carbon emission and COD emission are large, the environment is seriously polluted, and the energy-saving and environment-friendly effects are poor.

The present application has been made for the above-mentioned reasons.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, this application provides a fiber reinforced composite guardrail, has that the installation is convenient, connect characteristics firm, that the security is high, the secondary damage rate is low, has improved the shock attenuation and the buffering effect of rail guard, has prolonged rail life, has reduced comprehensive cost.

In order to achieve the purpose, the following technical scheme is adopted in the application:

the utility model provides a fiber reinforced composite guardrail, includes the vertical stand of a plurality of interval arrangements, many vertical interval arrangements's guard beam and a plurality of vertical interval set up the connecting piece on the stand, its characterized in that: one end of the connecting piece is buckled on the side wall of the upright post, and the other end of the connecting piece penetrates through the upright post and is fixedly connected with the upright post to form a semi-movable connecting structure of the connecting piece and the upright post; each protective beam transversely extends to be arranged in a gap between the connecting piece and the upright post.

Connecting piece one end and stand lock, the other end is fixed with the stand, lock and fixed dual mode, give the half swing joint of connecting piece and stand, when the protection roof beam passes the clearance between connecting piece and the stand and extends the installation, form half swing joint between protection roof beam and the stand, when the rail guard receives the external force impact that comes from vehicle out of control etc. and bring, the protection roof beam takes place to warp, drive the connecting piece of being connected with the stand lock and separate with the stand in this department, and fixed connection's one end still keeps connecting, under the unchangeable circumstances of guaranteeing whole rail guard shape, effectively avoided the protection roof beam to bump the breakage under the hard condition, thereby avoided because of the secondary injury that rail guard self structure damaged vehicle, driver and crew led to the fact.

On the basis of the scheme, the structure of the connecting piece is further researched, and a preferable connecting piece structure is determined to have the following characteristics: the connecting piece comprises a buckling section, a nesting section and a fixing section which are connected in sequence; the stand column is provided with buckling holes and through holes, the buckling holes are positioned on the side wall of one side of the stand column, and the through holes are arranged in pairs and are respectively positioned on the front side wall and the rear side wall of the stand column; the end part of the buckling section is buckled at the buckling hole and is movably connected with the upright post, and the fixed section penetrates through the upright post through the through hole and is fixedly connected with the upright post; an embedded cavity is formed between the connecting piece and the upright post, and the protective beam penetrates through the embedded cavity. The connecting piece is divided into three sections according to functions, the embedding section is a force application part, the buckling section and the fixing section are installation parts of the connecting piece, the upright post is provided with a buckling hole and a through hole in a matching way with the connecting piece, the buckling hole is arranged on the single-side wall, the buckling section is conveniently and movably buckled on the upright post, the connection of the connecting piece and the upright post in a non-strong stress state is kept, and the movable connection of the connecting piece and the upright post in a severe collision is also endowed; the through holes are respectively arranged on the front side wall and the rear side wall (or the corresponding positions of the left side wall and the right side wall) of the upright column, so that the fixing section is ensured to pass through the upright column for installation; the parts (namely most buckling sections, part of fixing sections and all embedding sections) exposed outside the upright posts form embedding cavities with the upright posts, a semi-closed installation space is provided for the protective beam, and the protective beam can meet daily protection purposes and can deal with emergency conflict states.

On the basis of the scheme, the structure of the upright post is further researched, and a preferable connecting piece structure is determined to have the following characteristics: the top of the upright post is provided with a seat cap, a hook is arranged between the seat cap and the connecting piece positioned in the upright post, one end of the hook is fixed with the seat cap, and the other end of the hook is hung and buckled on the connecting piece. The setting of seat cap has avoided rainwater, impurity etc. to get into in the stand, has ensured the shape and the materialization stable performance of stand, sets up the couple between seat cap and the connecting piece, and the connecting piece is pulled seat cap formation from the below, has ensured not deviating from of seat cap and stand, and the steadiness that stand and connecting piece are connected has been reinforceed again to wall and seat cap diapire tripartite effort before the stand.

On the basis of the scheme, the structure of the connecting piece is further researched, and a preferable connecting piece structure is determined to have the following characteristics: the buckling section and the nesting section are in right-angle or arc transition connection, and the nesting section and the fixing section are in right-angle or arc transition connection. The right angle connection forms a square structure, so that the processing is convenient; the arc (such as fillet) transition connection endows the connecting piece with a smooth structure, and avoids the damage caused by sharp appearance of the connecting piece.

On the basis of the scheme, the structure of the connecting piece is further researched, and a preferable connecting piece structure is determined to have the following characteristics: one end of the connecting piece penetrating through the upright post is fixed through threads. The screw connection may be a bolt or a screw, and is not limited to the above. Therefore, more preferably, a sleeve is arranged outside the fixed position of the connecting piece and the upright column, so that damage to the fixed part due to external force collision is avoided, and the connection firmness of the upright column and the connecting piece is influenced.

On the basis of the scheme, the protective beam is further researched, and a preferable connecting piece structure is determined to have the following characteristics: the protective beam comprises a fiber layer and a protective layer coated on the outer surface of the fiber layer. More preferably, the fiber layer is formed by tiling or weaving a plurality of fibers along the length direction of the protective beam; the protective layer is a thermoplastic resin layer; the outer wall of the protective layer is provided with a plurality of convex edges extending along the length direction of the protective beam. The protective beam mainly comprises a fiber layer and a resin protective layer, has strong impact resistance, can effectively slow down impact force when colliding, improves safety, has more excellent aging resistance of resin and good flame retardant effect, effectively prolongs the service life of the protective beam, is favorable for reducing maintenance cost, has lower specific gravity compared with steel, and reduces transportation cost and installation difficulty.

Drawings

FIG. 1 is a perspective view of one embodiment of the present application;

FIG. 2 is a top view of a portion of the structure of the column;

FIG. 3 is a cross-sectional view of a first assembly of the connecting member to the upright;

FIG. 4 is a cross-sectional view of a second assembly of the connecting member to the upright;

FIG. 5 is another plan view of a portion of the structure of the stud;

FIG. 6 is a cross-sectional view of a third assembly of the connecting member to the upright;

FIG. 7 is a cross-sectional view of a second assembly of the connecting member to the upright;

FIG. 8 is another perspective view of the present application;

FIG. 9 is a schematic structural diagram of a protective layer of a guard beam with a partial cut-away;

fig. 10 is a schematic cross-sectional view of a guard beam.

In the figure: 1. a column; 2. a guard beam; 21. a fibrous layer; 22. a protective layer; 221. a rib; 3. a connecting member; 31. a buckling section; 32. a nesting section; 33. a fixed section; 4. a fastener; 41. a limiting part; 42. a screw connection part; 5. a seat cap; 51. hooking; 6. a sleeve; A. and a nested cavity.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1, a fiber reinforced composite guardrail comprises a plurality of longitudinal upright posts 1 arranged at intervals, a plurality of protective beams 2 arranged at intervals in the longitudinal direction, and a plurality of connecting pieces 3 arranged on the upright posts 1 at intervals in the longitudinal direction, wherein one end of each connecting piece 3 is buckled on the side wall of each upright post 1, and the other end of each connecting piece 3 penetrates through each upright post 1 and is fixedly connected with each upright post 1 to form a semi-movable connecting structure of each connecting piece 3 and each upright post 1; each guard beam 2 extends transversely to the space between the connecting piece 3 and the upright 1.

One end of a connecting piece 3 is buckled with the upright post 1, the other end of the connecting piece is fixed with the upright post 1, and the buckling and fixing modes are adopted, so that the connecting piece 3 is in half movable connection with the upright post 1, when the protective beam 2 passes through a gap between the connecting piece 3 and the upright post 1 to extend and install, half movable connection is formed between the protective beam 2 and the upright post 1, when the protective guard is impacted by external force caused by out-of-control vehicles and the like, the protective beam 2 deforms, the connecting piece 3 buckled and connected with the upright post 1 is driven to be separated from the upright post 1 at the end, and one end of the fixed connection is still connected.

On the basis of the scheme, the connecting piece can also adopt the following structure: referring to fig. 3, the connecting member 3 includes a fastening section 31, a nesting section 32, and a fixing section 33 connected in sequence; the upright post 1 is provided with buckling holes (not marked in the figure) and through holes (not marked in the figure), the buckling holes are positioned on the side wall of one side of the upright post 1, and the through holes are arranged in pairs and are respectively positioned on the front side wall and the rear side wall of the upright post 1; the end part of the buckling section 31 is buckled at the buckling hole and is movably connected with the upright post 1, and the fixed section 33 penetrates through the upright post 1 through the through hole and is fixedly connected with the upright post 1; an embedded cavity A is formed between the connecting piece 3 and the upright post 1, and the protective beam 2 penetrates through the embedded cavity A. The connecting piece 3 is divided into three sections according to functions: the embedded section 32 is a force application part, the buckling section 31 and the fixing section 33 are installation parts of the connecting piece 3, the upright post 1 is provided with a buckling hole and a through hole in a matching way with the connecting piece 3, the buckling hole is arranged on the side wall on one side, so that the buckling section 31 is conveniently and movably buckled on the upright post 1, the connection of the connecting piece 3 and the upright post 1 in a non-strong stress state is kept, and the movable connection of the connecting piece 3 and the upright post 1 in a severe collision is also endowed; the through holes are respectively arranged on the front side wall and the rear side wall (or the corresponding positions of the left side wall and the right side wall and the like) of the upright post 1, so that the fixing section 33 is ensured to be installed through the upright post 1; the part (namely most of the buckling section 31, part of the fixing section 33 and all the embedding sections 32) exposed outside the upright post 1 and the upright post 1 form an embedding cavity A, so that a semi-sealed installation space is provided for the protective beam 2, and the protective beam can meet daily protection purposes and can deal with emergency conflict states.

On the basis of the scheme, the stand column 1 can also be provided with a seat cap 5 in a matching way: referring to fig. 1 and 2, a seat cap 5 is disposed on the top of the upright post 1, referring to fig. 4, a hook 51 is disposed between the seat cap 5 and the connecting member 3 located in the upright post 1, one end of the hook 51 is fixed to the seat cap 5, and the other end is hooked on the fixed end 33 of the connecting member 3. The setting of seat cap 5 has avoided rainwater, impurity etc. to get into in the stand, has ensured the shape and the materialization stable performance of stand, sets up couple 51 between seat cap 5 and the connecting piece 3, and connecting piece 3 drags seat cap 5 formation from the below, has ensured not deviating from of seat cap 5 with stand 1, and the steadiness that stand 1 and connecting piece 3 are connected has been reinforceed again to wall and the 5 diapire three-way forces of seat cap before the stand 1.

On the basis of the scheme, the whole connecting piece 3 can adopt the following structure: the buckling section 31 and the nesting section 32 are in right-angle or arc transition connection, and the nesting section 32 and the fixing section 33 are in right-angle or arc transition connection. The right angle connection forms a square structure (see fig. 8), and the processing is convenient; the arc (such as fillet) transition connection endows the connecting piece with a smooth structure (see figure 1), and avoids the damage caused by sharp appearance of the connecting piece.

On the basis of the scheme, the connecting piece 3 and the upright post 1 can be fixed by adopting the following structure: the connecting piece 3 runs through the one end of stand and passes through fastener 4 threaded fastening, and fastener 4 includes spacing portion 41 and spiro union portion 42, and spacing portion 41 is located stand outer wall department, and spiro union portion 42 screw in is in the connecting piece 3. The screw connection may be a bolt or a screw, and is not limited to the above. More preferably, with reference to fig. 5 and 6, the sleeve 6 is disposed outside the limiting portion 41, so as to avoid damage to the fixing portion caused by external force collision and influence on the connection firmness of the upright post 1 and the connecting member 3.

On the basis of the scheme, the connecting piece 3 can be used independently, and can also be matched with the seat cap 5 as shown in fig. 4 and 7.

With reference to fig. 9 and 10, the protective beam 2 includes a fiber layer 21 and a protective layer 22 covering the outer surface of the fiber layer 21, the fiber layer 21 is formed by laying or weaving a plurality of fibers along the length direction of the protective beam 2, the fiber layer 21 may be a single-layer fiber layer formed by a plurality of fibers or a plurality of layers of fibers, the fiber layer 21 is made of polyester industrial yarn fibers, the tensile strength of a single fiber is not less than 900MPa, the breaking strength is greater than 8.0cN/dtex, the density of the fiber is small, the specific strength is high, and the impact resistance is high, so that the energy of the protective beam 2 impacted by a vehicle can be effectively absorbed when the vehicle collides, the impact force is reduced, and the injury to persons in the vehicle is reduced or even avoided; the protective layer 22 is a thermoplastic resin layer and can be made of PVC or modified PVC and other resin materials, the tensile strength of the protective layer is not less than 30MPa, the protective layer 22 not only can well protect the fiber layer 21, but also can increase the strength of the protective beam 2 and prolong the service life of the protective beam 2, a plurality of convex edges 221 extending along the length direction of the protective beam 2 are arranged on the outer wall of the protective layer 22, and the cross sections of the convex edges 221 are of arc-shaped structures, so that the strength of the protective beam 2 can be further increased.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a fiber reinforced composite guardrail, includes the vertical stand of a plurality of interval arrangements, many vertical interval arrangements's guard beam and a plurality of vertical interval set up the connecting piece on the stand, its characterized in that: one end of the connecting piece is buckled on the side wall of the upright post, and the other end of the connecting piece penetrates through the upright post and is fixedly connected with the upright post to form a semi-movable connecting structure of the connecting piece and the upright post; each protective beam transversely extends to be arranged in a gap between the connecting piece and the upright post.

2. The fiber reinforced composite fence of claim 1, wherein: the connecting piece comprises a buckling section, a nesting section and a fixing section which are connected in sequence; the stand column is provided with buckling holes and through holes, the buckling holes are positioned on the side wall of one side of the stand column, and the through holes are arranged in pairs and are respectively positioned on the front side wall and the rear side wall of the stand column; the end part of the buckling section is buckled at the buckling hole and is movably connected with the upright post, and the fixed section penetrates through the upright post through the through hole and is fixedly connected with the upright post; an embedded cavity is formed between the connecting piece and the upright post, and the protective beam penetrates through the embedded cavity.

3. The fiber reinforced composite fence of claim 1, wherein: the top of the upright post is provided with a seat cap, a hook is arranged between the seat cap and the connecting piece positioned in the upright post, one end of the hook is fixed with the seat cap, and the other end of the hook is hung and buckled on the connecting piece.

4. The fiber reinforced composite fence of claim 2, wherein: the buckling section and the nesting section are in right-angle or arc transition connection, and the nesting section and the fixing section are in right-angle or arc transition connection.

5. The fiber reinforced composite fence of claim 1, wherein: one end of the connecting piece penetrating through the upright post is fixed through threads.

6. The fiber reinforced composite fence of claim 1 or 5, wherein: and a sleeve is arranged outside the fixed position of the connecting piece and the upright post.

7. The fiber reinforced composite fence of claim 1, wherein: the protective beam comprises a fiber layer and a protective layer coated on the outer surface of the fiber layer.

8. The fiber reinforced composite fence of claim 7, wherein: the fiber layer is formed by tiling or weaving a plurality of fibers along the length direction of the protective beam.

9. The fiber reinforced composite fence of claim 7 or 8, wherein: the protective layer is a thermoplastic resin layer.

10. The fiber reinforced composite fence of claim 9, wherein: the protective layer outer wall is equipped with a plurality of beads that extend along protective beam length direction.

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